25LC080C-I/ST

Overview

The Microchip Technology 25LC080C-I/ST is an 8 Kbit Serial Electrically Erasable PROM featuring a 1024 x 8-bit organization. It utilizes a standard SPI-compatible serial bus with SCK, SI, SO, and CS signals for communication. The device supports a maximum clock frequency of 10 MHz at VCC levels between 4.5V and 5.5V. Operating voltage ranges from 1.8V to 5.5V for industrial temperature grades (-40°C to +85°C). It includes a 16-byte page write buffer, self-timed erase/write cycles up to 5 ms, and block write protection capabilities.

Feature Summary

• Supports high-speed SPI communication with a maximum clock frequency of 10 MHz
• Includes hardware write-protect pin and software-configurable block protection for data security
• Features low-power CMOS technology with standby current as low as 1 µA
• Provides built-in power-on/off data protection and write enable latch mechanisms

Applications

• Microcontroller system configuration storage
• Calibration parameter persistence in embedded devices
• Data logging applications requiring non-volatile memory
• Industrial control systems needing reliable data retention

Procurement Notes

Verify the specific suffix 'I/ST' confirms the Industrial temperature range (-40°C to +85°C) and TSSOP-8 package type. Ensure the 'C' variant designation matches the required 16-byte page size, distinct from the 'D' variant's 32-byte page. Confirm RoHS compliance status if environmental regulations apply to the target assembly process.

Selection Notes

Select this component when an 8 Kbit capacity with SPI interface is required for industrial environments. The 25LC080C-I/ST offers a balance of speed and power consumption suitable for battery-operated or space-constrained designs. Consider the 16-byte page size limitation for write operations compared to larger page sizes in other variants.

Part Context

This part belongs to the 25LC080C/D family of 8K SPI Bus Serial EEPROMs manufactured by Microchip Technology. The 'LC' designation indicates a supply voltage range starting at 2.5V, while 'AA' variants support lower voltages down to 1.8V. The 'C' suffix specifies the 16-byte page architecture, differentiating it from the 'D' version which features a 32-byte page.

Replacement Considerations

25LC080D-I/ST (32-byte page size)

FAQ

How does the HOLD pin function during SPI communication?

The HOLD pin allows the host to pause serial communication without resetting the sequence. When pulled low while SCK is low, the SO pin goes high-impedance and input transitions are ignored until HOLD is released.

What is the maximum internal write cycle time?

The internal write cycle time is typically 5 ms maximum, initiated by raising the CS pin after a valid write sequence.